Quantum equation symbols

I have a good understanding of general quantum physics but not so much of an understanding of the mathmatics around equations,
such as the equations on wikipeadia under the quantum physics page to understand any of the equations you much first know what the symbols in the equation means
can anyone suggest a website that may have some form of index for these symbols on

I have a good understanding of general quantum physics but not so much of an understanding of the mathmatics around equations,
such as the equations on wikipeadia under the quantum physics page to understand any of the equations you much first know what the symbols in the equation means
can anyone suggest a website that may have some form of index for these symbols on